Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2024
ProjectBonneville
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value120 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Jan 1 - May 1)
Total Number of Fish Observed2116
Percent of Total Run Analyzed [Number Observed]25.56 % [541]1
Tailrace TDG Percent Exposure Index113.63 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 80% of Run Period (Jan 22 - Apr 18)
Number of Fish Observed1716
Percent of Middle 80% of Run Analyzed [Number Observed]20.16 % [346]
Tailrace TDG Percent Exposure Index111.07 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Feb 10 - Mar 29)
Number of Fish Observed1104
Percent of Middle 50% of Run Analyzed [Number Observed]5.07 % [56]
Tailrace TDG Percent Exposure Index106.57 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunJan 1
5% of Run passedJan 9
10% of Run passedJan 22
50% of Run passedMar 9
90% of Run passedApr 18
95% of Run passedApr 25
Last Day of RunMay 1

1. Total Run Analyzed [541] is less than total observed during the period [2116]. Only fish observed on days with River Parameter data are analyzed.